Materials Literature
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The purpose of this study is to investigate the tensile properties of super rapid tempering steel treated by high frequency induction heating method. In order to discuss the effect of tempering time on tensile properties, two types of specimens in which tempering time was different were prepared. Super rapid tempering…
A novel wide-band left-handed metamaterial structure is designed based on the theory of the LHM,which is composed of a copper wire and a resonator with closed-rectangular ring which has a cross wire inside.Resonators are used to achieve negative permeability and wires are used to achieve negative permittivity in the n…
In this paper a survey of metastabilities will be presented, which often occur in important technical materials and processes. Several metastable phases are formed during rapid cooling of liquids or solid precursors. The industrially applied mechanical alloying, leading to the formation of nano-crystalline and amorpho…
We consider scattering of light from a rugate thin film in the case of total internal reflection. This might occur if the refractive index of the incident medium exceeds that encountered in the rugate.
This paper describes the fabrication and assembly of a tubular micro-torsion-actuator of TiNiCu shape memory alloy (SMA) with a co-axial bias mechanism of TiNi super elasticity alloy (SEA). The tubular bias mechanism with spring beams (O.D: 880 µm) was inserted and assembled in the SMA tubular actuator, which consiste…
蛋白质溶液具有凝胶化趋势，其中丝素蛋白的凝胶化在常温下需要十几天的时间。本文提出了一种促使丝素蛋白瞬时凝胶化的方法，该方法能够促使丝素蛋白水凝胶瞬时形成。SEM分析显示该水凝胶内部为疏松多孔的三维交联网状无规则卷曲结构，且有很多微球状的结构交联在一起。利用X衍射、红外光谱等手段进行检测，结果显示丝素蛋白分子快速凝胶化过程中，其分子结构基本保持无规卷曲不变。该瞬时凝胶化的丝素水凝胶具有一定的力学性能和保水性能，可以用于化妆品以及组织工程材料。>Protein solution has a tendency of gelation. For silk fibroin solution, it needs more than ten d…
Localized surface plasma is a well-known phenomenon in plasmonics. Due to the interaction with high-frequency electromagnetic fields, electromagnetic coupling could be produced in ordered metal structure array. One of the famous shape arrays is the periodic bowtie antennas, in which two noble metal triangles face tip-…
By using typical luminescent materials,4,4′-bis(2,2′-diphenylvinyl)-1,1′-biphenyl(DPVBi) and 5,6,11,12-tetraphenylnaphthacene(Rubrene) as a blue and orange emitter,respectively,a highly efficient bright nondoped white electroluminescent device with low driving voltage and ideal chromaticity is fabricated.The turn-on v…
A heterojunction solar cell based on poly( hexylthiophene)( P3HT) and fullerene( PCBM) was fabricated. The hole transport layer and the active layer were prepared by spraying. The effect of the substrate temperature on the morphology of the active layer and the performance of the device were studied. The results show…
ВЗАИМОДЕЙСТВИЕ ЛОКАЛЬНО-МАКСВЕЛЛОВСКИХ ПОТОКОВ В МОДЕЛИ ШЕРОХОВАТЫХ СФЕРДля нелинейного кинетического уравнения Бриана-Пиддака построены новые приближенные явные решения.Они имеют вид линейных комбинаций двух локальных максвеллианов типа
This paper investigates the nonlinear static analysis for studying the behavior of Progressive failure of RC beams. Nonlinear static analysis is strongly influenced by basic inputs like stress-strain relationship of constitutive materials, P-M yield interaction and moment rotation capacity of members. Normal limit sta…
Исследованы композиты восстановленного оксида графена с CoFe2O4 в качестве материала для электродов суперконденсаторов. В дополнение к морфологическим и структурным характеристикам образцов, полученным методами сканирующей электронной микроскопии, рентгеновской дифракции и инфракрасной спектроскопии с преобразованием…
Many investigations have been paid to an application of cellulose nanofiber (CNF) because of its diverse fascinating characteristics such as outstanding mechanical, thermal properties, renewable resources, and others. In this article, three developments of nanocomposites between CNF and thermoplastics were described.…
ЗАРЯЖЕННАЯ КОМПОЗИТНАЯ ЧАСТИЦА В ПОСТОЯННОМ ЭЛЕКТРИЧЕСКОМ ПОЛЕРассмотрено движение заряженной композитной частицы в постоянном электрическом поле.С использованием биллиардного формализма установлены точные законы движения такой частицы с небольшим числом внутренних степеней свободы.Предложен обобщенный прием Шварца сп…
A nano-scale active directional beaming device based on mechanical actuation of double sided plasmonic surface gratings is proposed. It is shown that asymmetric mechanical actuation of optimally designed plasmonic surface gratings surrounding a subwavelength metal slit can produce off-axis beaming with controllable be…
The kinetics of epoxidation of polyisobutene by peracetic acid generated in situ from hydrogen peroxide and acetic acid in the presence of solid acid WO3/ZrO2 were studied. The effect of several reaction parameters such as stirring speed, acetic acid-to-double bond molar ratio, temperature and content of catalyst were…
摘要： 基于铁基电刷镀层在绿色再制造工程中的巨大优势和潜力，在铁基电刷镀体系的基础上添加可共沉积的化学离子制备铁基合金镀层，并通过扫描电子显微镜、X射线衍射仪、摩擦磨损试验机等分析测试手段，研究添加离子对镀层形貌、成分、结构、硬度、摩擦磨损性能的影响，同时研究镀层的热稳定性。结果表明：添加与Fe离子共沉积的W元素可以提高铁镀层的硬度，降低应力开裂现象，但镀层致密度低，耐磨性差；通过进一步添加具有润滑和优异塑性流动能力的Cu元素可以细化镀层组织，改善耐磨性。三种铁基镀层在热处理过程中均有新相Fe3C形成，随着温度的升高，镀层晶粒长大；Fe和Fe-W镀层在450～650 ℃区间出现二次硬化现象。
We explore the physics of vortex pinning mechanism in iron arsenide superconductor SrFe1.7Co0.3As2, via magnetization based studies. In particular we try to compare the experimental results for critical current density with the theoretical pictures for fluctuation in mean free path induced (δ) pinning and the fluctuat…
Calcium carbonate, which is made from limestone available in all over Japan, has widely been used as fillers for various fields like rubber, plastics and paint, etc. In this paper, function and role of calcium carbonate, especially the ultrafine synthetic calcium carbonate, applied for rubber is reviewed.In this repor…
液化天然ガス（LNG）を主原料とする都市ガスは，発熱量を一定範囲内に調整するために製造工程において液化石油ガス（LPG）を混合している．約－160˚CのLNGに対して－40˚C程度のLPG，いわゆる低温LPGを液状態のままで混合する場合，LPG中に不純物として溶解しているメタノールは，LNGとの混合後の液温度である約－150˚Cでは凝固点を下回り，析出してしまう可能性がある．そこで低温LPG中からメタノールを除去する方法として，Na-X型ゼオライトを用いた吸着システムを検討した．実験では実際の運転において想定されるLPG流量およびメタノール濃度の変動を考慮したパイロットスケール試験を行い，これらの変動がおよぼすメタノールの吸着容量…